JP4178512B2 - Electric vehicle exhaust heat structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an exhaust heat structure for an electric vehicle, and more particularly, to an exhaust heat structure for an electric vehicle capable of exhausting electrical components without providing a dedicated exhaust heat hole.
[0002]
[Prior art]
There is an electric vehicle in which a traveling motor is mounted as a power source of the propulsion device and the vehicle travels by supplying electric power to the motor from a battery. The electric vehicle is equipped with electrical components in order to control the power supplied to the motor. Since the electrical component generates heat when energized, it is necessary to exhaust the electrical component. As an electrical component, an inverter, a controller, a battery, a motor, etc. can be considered.
[0003]
FIG. 7 shows a conventional exhaust heat structure of an electric vehicle. In FIG. 7, 102 is an electric vehicle, 104 is a vehicle body, 106 is a floor panel, 108 is a passenger compartment, and 110 is an electrical component. In the exhaust heat structure of the electric vehicle 102, an electrical component 110 of a travel motor (not shown) is mounted in a vehicle interior 108 of the floor panel 106 that constitutes the vehicle body 104, and an exhaust heat hole 112 that exhausts heat of the electrical component 110 is provided. An electric fan 114 that is provided on the floor panel 106 and guides the exhaust heat of the electrical component 110 to the exhaust heat hole 112 is provided, and a rain protection member 116 that prevents rainwater from entering the exhaust heat hole 112 is provided.
[0004]
In the conventional exhaust heat structure, a hole having an inwardly inclined surface is formed in the hole plate surface of the front fender, and air flowing into the engine room is formed in the hole plate surface of the front fender. There is one that discharges to the side of the vehicle body through the provided hole (see, for example, Patent Document 1).
[0005]
Further, in the conventional exhaust heat structure, there is one that guides the exhaust heat of a traveling motor to an outdoor heat exchanger and recovers the exhaust heat while enabling the motor to be cooled (for example, patent document). 2).
[0006]
[Patent Document 1]
JP-A-6-127277 (second page, FIG. 3)
[Patent Document 2]
JP-A-5-162536 (3rd page, FIG. 1)
[0007]
[Problems to be solved by the invention]
Incidentally, in the conventional exhaust heat structure of the electric vehicle 102 shown in FIG. 7, in order to exhaust heat of the electrical component 110 mounted on the floor panel 106 constituting the vehicle body 104, the heat exhaust hole 112 is provided in the floor panel 106. A rain protection member 116 for preventing rainwater from entering through the exhaust heat hole 112 is provided.
[0008]
For this reason, in the conventional exhaust heat structure of the electric vehicle 102, it is necessary to form a dedicated exhaust heat hole 112 and to provide other parts such as a rain protection member 116, which increases the number of processing steps and the number of parts. There is an inconvenience of having to make a big body change.
[0009]
[Means for Solving the Problems]
Accordingly, the present invention is to eliminate the disadvantages described above, in the exhaust heat structure of an electric vehicle equipped with electric components such as a motor provided with a ventilation hole communicating with the vehicle exterior to the body, the license plate of the ventilation hole The vehicle body panel is formed so as to overlap , a cover member is provided on the vehicle interior side of the ventilation hole, a rain prevention member is provided on the vehicle exterior side, the electrical component is disposed in front of the ventilation hole, and the ventilation An electric fan is provided in the vicinity of the hole.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the exhaust heat structure for an electric vehicle according to the present invention, a cover member is provided on the vehicle interior side of a ventilation hole communicating with the outside of the vehicle compartment formed on the panel of the vehicle body so as to overlap the license plate, and a rain protection member is provided on the vehicle exterior side. The electric parts are placed in front of the ventilation holes and an electric fan is installed in the vicinity of the ventilation holes, so that the exhaust heat from the electric parts is guided to the existing ventilation holes on the body panel by the electric fan and released outside the passenger compartment. be able to.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. 1 and 2, 2 is an electric vehicle, 4 is a vehicle body, 6 is a floor panel, 8 is a back panel, 10 is a passenger compartment, and 12 is an electrical component. The electric vehicle 2 is mounted with the electrical component 12 on the floor panel 6 of the vehicle body 4 and travels by controlling electric power supplied to a travel motor (not shown). As the electrical component 12, an inverter, a controller, a battery, a motor, or the like can be considered.
[0012]
The electric vehicle 2 is provided with a ventilation hole 14 communicating with the outside of the passenger compartment 10 in the center of the back panel 8 constituting the vehicle body 4 behind the electrical component 12. The ventilation hole 14 adjusts the atmospheric pressure by releasing pressure fluctuations in the passenger compartment 10 due to opening and closing of a door (not shown).
[0013]
The exhaust heat structure of the electric vehicle 2 is provided with the ventilation hole 14 formed in the back panel 8 of the vehicle body 4. The back panel 8 is provided with a cover member 16 on the inside of the passenger compartment 10 of the ventilation hole 14 and a rain protection member 18 on the outer side of the passenger compartment 10. The cover member 16 is provided so as to open forward and upward of the opening 20 of the ventilation hole 14. The rain protection member 18 is provided so that the lower end thereof is in close contact with and separated from the back panel 8 with the upper part of the opening 20 of the ventilation hole 14 as a fulcrum, and opens and closes the opening 20.
[0014]
In the electric vehicle 2, the electrical component 12 is disposed in front of the ventilation hole 14, and an electric fan 22 for exhaust heat is provided in the vicinity of the ventilation hole 14. The electric fan 22 is disposed obliquely above the opening 20 of the ventilation hole 14 so as to face the ventilation hole 14 side. In addition, the electric vehicle 2 is provided with the ventilation hole 14 formed in the back panel 8 so as to overlap the license plate 24.
[0015]
Next, the operation will be described.
[0016]
In the exhaust heat structure of the electric vehicle 2, a cover member 16 is provided inside the vehicle compartment 10 of the ventilation hole 14 communicating with the outside of the vehicle compartment 10 formed in the back panel 8 constituting the vehicle body 4, and rain protection is provided outside the vehicle compartment 10. A member is provided, the electrical component 12 is disposed in front of the ventilation hole 14, and the electric fan 22 is provided in the vicinity of the ventilation hole 14.
[0017]
The exhaust heat of the electrical component 12 is guided to the existing ventilation hole 14 in the back panel 8 of the vehicle body 4 by the electric fan 22 and is released from the opening 20 through the rain prevention member 18 to the outside of the vehicle compartment 10.
[0018]
For this reason, this heat exhaust structure of the electric vehicle 2 can exhaust the electrical component 12 without providing a dedicated heat exhaust hole.
[0019]
In addition, the exhaust heat structure of the electric vehicle 2 can form an air flow to the opening 20 by disposing the electric fan 22 above the opening 20 of the ventilation hole 14, so that exhaust heat can be generated. Can be done efficiently.
[0020]
Furthermore, the exhaust heat structure of the electric vehicle 2 is formed so that the ventilation hole 14 overlaps with the number plate 24, so that the number plate 24 is disposed at substantially the center in the width direction of the vehicle body 4. Is arranged at the approximate center of the vehicle body 4, and the heat exhausting of the electrical member 12 having a shape long in the width direction of the vehicle body 4 can be efficiently performed by the electric fan 22 at the approximate center of the vehicle body 4.
[0021]
3 and 4 show a second embodiment. The exhaust heat structure of the electric vehicle according to the second embodiment is provided with an exhaust heat duct 26 that communicates the electrical component 12 and the electric fan 22. The exhaust heat duct 26 is in communication with the inlet 28 on one end side being expanded toward the rear side of the electrical component 12, and the outlet 30 on the other end side is constricted in the electric fan 22 above the cover member 16. The exhaust heat passage 32 communicated with each other.
[0022]
The exhaust heat structure of the electric vehicle 2 according to the second embodiment is such that the electrical component 12 and the electric fan 22 are connected to each other by the exhaust heat duct 26, thereby expanding the exhaust heat of the electrical component 12. By the outlet 30 that is efficiently collected by the electric fan 22 and communicated with the electric fan 22, the air can be positively guided to the ventilation hole 14 and exhaust heat can be efficiently performed.
[0023]
FIG. 5 shows a third embodiment. In the exhaust heat structure of the electric vehicle 2 according to the third embodiment, an air intake duct 34 is provided on the front side of the electrical component 12. In this intake duct 34, a population 36 on one end side is expanded and opened toward the front of the passenger compartment 10, and an outlet 38 on the other end side is closed to the front side of the electrical component 12 for communication. A passage 40 is provided.
[0024]
In the exhaust heat structure of the electric vehicle 2 according to the third embodiment, the intake duct 34 for taking in the air of the vehicle compartment 10 is provided on the front side of the electrical component 12, so that the air in the vehicle compartment 10 is supplied by the inlet 36 that expands. It can be efficiently collected and taken into the electrical component 12 by the intake passage 40, and the exhaust heat of the electrical component 12 can be efficiently gathered by the exhaust heat duct 26 and actively guided to the ventilation hole 14. The exhaust heat of the component 12 can be performed more efficiently.
[0025]
FIG. 6 shows a fourth embodiment. In the exhaust heat structure of the electric vehicle 2 of the fourth embodiment, the outer shell wire 42 on the upper side of the electrical component 12 is formed so as to be inclined upward with respect to the horizontal line H from the front side to the rear side, and the rear side of the electrical component 12 An exhaust heat duct 26 is provided. The exhaust heat duct 26 is in communication with the inlet 28 on one end side being expanded toward the uppermost part on the rear side of the electrical component 12, and the outlet 30 on the other end side is connected to the electric fan 22 above the cover member 16. An exhaust heat passage 32 is provided to communicate with the gas.
[0026]
The exhaust heat structure of the electric vehicle 2 according to the fourth embodiment expands the exhaust heat flowing so as to rise and incline along the outer shell line 42 on the upper side of the electrical component 12 to the uppermost portion on the rear side of the electrical component 12. The outlet 30 that is efficiently collected by the inlet 28 of the exhaust heat duct 26 and is confined to and communicated with the electric fan 22 can be positively guided to the ventilation hole 14, and the exhaust heat can be more efficiently exhausted.
[0027]
【The invention's effect】
As described above, the exhaust heat structure for an electric vehicle according to the present invention can guide the exhaust heat of the electrical components to the existing ventilation hole in the panel of the vehicle body by the electric fan and release it to the outside of the passenger compartment. For this reason, the exhaust heat structure of this electric vehicle can exhaust the heat of the electrical components without providing a dedicated exhaust heat hole.
[Brief description of the drawings]
FIG. 1 is a sectional view of a rear portion of a vehicle body showing a first embodiment of an exhaust heat structure for an electric vehicle.
FIG. 2 is a perspective view of the rear portion of the vehicle body showing the first embodiment of the exhaust heat structure of the electric vehicle.
FIG. 3 is a cross-sectional view of a rear portion of a vehicle body showing a second embodiment of the exhaust heat structure of the electric vehicle.
FIG. 4 is a perspective view of the rear portion of the vehicle body showing a second embodiment of the exhaust heat structure of the electric vehicle.
FIG. 5 is a cross-sectional view of the rear portion of the vehicle body showing a third embodiment of the exhaust heat structure of the electric vehicle.
FIG. 6 is a cross-sectional view of the rear portion of the vehicle body showing a fourth embodiment of the exhaust heat structure of the electric vehicle.
FIG. 7 is a cross-sectional view of a rear portion of a vehicle body showing a conventional example of an exhaust heat structure for an electric vehicle.
[Explanation of symbols]
2 Electric vehicle 4 Car body 6 Floor panel 8 Back panel 10 Car compartment 12 Electrical component 14 Ventilation hole 16 Cover member 18 Rain guard member 20 Opening portion 22 Electric fan 24 Number plate

Claims (1)

In the exhaust heat structure of an electric vehicle in which a ventilation hole communicating with the outside of the passenger compartment is provided in the vehicle body and electric parts such as a motor are mounted, the ventilation hole is formed in the panel of the vehicle body so as to overlap the license plate. A force bar member is provided on the vehicle interior side of the hole, a rain prevention member is provided on the vehicle exterior side, the electrical component is disposed in front of the ventilation hole, and an electric fan is provided in the vicinity of the ventilation hole. Electric vehicle exhaust heat structure.

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